Wind screens and glazing for motor and other vehicles



Patented Aug. 25, 1931 I 1,820,501.

UNITED STATES PATENT OFFICE GEORGES PAUL DESIPRE'I, OF PARIS, FRANCE, ASSIGNOR T COMPAGNIES REUNIS DES GLAOES 80 VERRES SPECIAUX DU NORD DE LA FRANCE, OF BOUSSOIS-SUB-SAMBRE,

Noni), FRANCE WIND SCREENS AND GLAZING FOR MOTOR AND OTHER VEHICLES No Drawing. Application filed March 21, 1929, Serial No. 349,001, and in France May 1, 1928.

In collisions between motor vehicles, trains, to break in acrowd of very small fragments, tramcars and the like serious accidents, even the danger for the passengers of being causing loss of life, are due to the breakage severely in ured by glass pleces Wlll be much of glass panes of the windows, which form reduced.

pieces of glass which are oftenvery sharp In testnnony whereof I have slgned my and will cause severe wounds. All such pre]- name to this specificatlon. udice is occasioned by the nature of the glass, GEORGES PAU D which is essentially fragile and brittle.

The present invention has for its ob ect to obviate spch drawbacks, and is characterized 5 in that itresides in the use, for the manufac- 5 ture of wind screens and glass windows for motor and like vehicles, of panes or plates of hardened glass obtained in the known manner, such glass being much stronger, and

when broken, forming a great number of small fragments which are relatively harmless. As is well known, hardened glass is obtained by suddenly cooling hot glass, for

instance by dipping a sheet of glass into a bath of oil, melted wax or other suitable material, or by subjecting said sheet of glass to an intense jet of air.

This particular use of hardened lass will g5 ofit'er a very important result, this eing the safety afforded to the users of motor or other vehicles, since the major part of the serious accidents caused by tlE breakage of wlndows M will now be obviated. This is due to the 3 fact that the hardened glass panes or plates will resist shocks much better than the ordinary glass panes, so that in many cases all breakage will be obviated, and also due to the fact that if broken, such panes will form 35 a great number of small fragments which cannot cause serious wounds.

Having now described'my invention what I claim as new and desire to secure by Let ters Patent is:

40 In a wind shield adapted for use upon motorcars-and other vehicles, the use of a sheet or panel of hardened glass for constituting the transparent part of the windshield so that and due to the property of hardene 45 glass of resisting shocks and, when broken, 

